Module Name: src
Committed By: marty
Date: Fri Dec 11 04:05:54 UTC 2015
Added Files:
src/sys/arch/arm/samsung: exynos5422_dma.c
Log Message:
add a dma file to the EXYNOS rewrite
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/arch/arm/samsung/exynos5422_dma.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/arch/arm/samsung/exynos5422_dma.c
diff -u /dev/null src/sys/arch/arm/samsung/exynos5422_dma.c:1.1
--- /dev/null Fri Dec 11 04:05:54 2015
+++ src/sys/arch/arm/samsung/exynos5422_dma.c Fri Dec 11 04:05:54 2015
@@ -0,0 +1,77 @@
+/* $NetBSD: exynos5422_dma.c,v 1.1 2015/12/11 04:05:54 marty Exp $ */
+
+/*-
+ * Copyright (c) 2012 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Nick Hudson
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "opt_exynos.h"
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: exynos5422_dma.c,v 1.1 2015/12/11 04:05:54 marty Exp $");
+
+#define _ARM32_BUS_DMA_PRIVATE
+
+#include <sys/param.h>
+#include <sys/bus.h>
+
+#include <arm/samsung/exynos_reg.h>
+#include <arm/samsung/exynos_var.h>
+
+struct arm32_bus_dma_tag exynos_bus_dma_tag = {
+ _BUS_DMAMAP_FUNCS,
+ _BUS_DMAMEM_FUNCS,
+ _BUS_DMATAG_FUNCS,
+};
+
+struct arm32_dma_range exynos_coherent_dma_ranges[1] = {
+ [0] = {
+ .dr_sysbase = 0, /* filled in */
+ .dr_busbase = 0, /* filled in */
+ .dr_flags = _BUS_DMAMAP_COHERENT,
+ },
+};
+
+struct arm32_bus_dma_tag exynos_coherent_bus_dma_tag = {
+ ._ranges = exynos_coherent_dma_ranges,
+ ._nranges = __arraycount(exynos_coherent_dma_ranges),
+ _BUS_DMAMAP_FUNCS,
+ _BUS_DMAMEM_FUNCS,
+ _BUS_DMATAG_FUNCS,
+};
+
+void
+exynos_dma_bootstrap(psize_t memsize)
+{
+ bus_addr_t dram_base = EXYNOS5_SDRAM_PBASE;
+
+ KASSERT(dram_base);
+ exynos_coherent_dma_ranges[0].dr_sysbase = dram_base;
+ exynos_coherent_dma_ranges[0].dr_busbase = dram_base;
+ exynos_coherent_dma_ranges[0].dr_len = memsize;
+}
+
